Abnormal conduction in corticospinal pathways in Wilson's disease: Investigation of nine cases with magnetic brain stimulation
Identifieur interne : 003515 ( Istex/Curation ); précédent : 003514; suivant : 003516Abnormal conduction in corticospinal pathways in Wilson's disease: Investigation of nine cases with magnetic brain stimulation
Auteurs : Meyer [Allemagne] ; T. C. Britton [Allemagne] ; C. Bischoff [Allemagne] ; J. Machetanz [Allemagne] ; R. Benecke [Allemagne] ; B. Conrad [Allemagne]Source :
- Movement Disorders [ 0885-3185 ] ; 1991.
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Abstract
Electromyographic (EMG) responses evoked by transcranial magnetic brain stimulation were studied in nine patients with Wilson's disease (WD). Six of the nine patients had prolonged central motor latencies (CMLs), reduced amplitude, or absent responses in at least one of the examined muscles. In one patient, abnormal EMG responses normalized following treatment with penicillamine. Pathophysiologically abnormal EMG responses might result from a potentially reversible impairment of corticomotoneuronal pathways and/or a reduced excitability of motoneurons due to basal ganglia dysfunction. The possible pathophysiological mechanisms are discussed.
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DOI: 10.1002/mds.870060409
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<front><div type="abstract" xml:lang="en">Electromyographic (EMG) responses evoked by transcranial magnetic brain stimulation were studied in nine patients with Wilson's disease (WD). Six of the nine patients had prolonged central motor latencies (CMLs), reduced amplitude, or absent responses in at least one of the examined muscles. In one patient, abnormal EMG responses normalized following treatment with penicillamine. Pathophysiologically abnormal EMG responses might result from a potentially reversible impairment of corticomotoneuronal pathways and/or a reduced excitability of motoneurons due to basal ganglia dysfunction. The possible pathophysiological mechanisms are discussed.</div>
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